HOW TO MEASURE YOUR FEET
If you’re unsure which shoe size you are, follow these simple steps. Tip: Measure at the end of the day when your feet are at their largest.

STEP ONE
Place the paper on the ground and stand on it with your weight slightly forward to make sure your foot is flat.

STEP TWO
Draw a line behind your heel and another line in front of your longest toe. It is common to have one foot longer than the other, so use the longer foot to measure.

STEP THREE
Measure the distance between lines in inches or centimetres. Find your measurement on the Muck Boot size chart to figure out the best. Round up if your size falls in between.
Men's Size Guide
EU | INSOLE LENGTH |
---|---|
SIZE | CM |
39/40 | 25 |
40 | 25.5 |
41 | 26 |
41/42 | 26.5 |
42 | 27 |
42/43 | 27.5 |
43 | 28 |
44 | 28.5 |
44/45 | 29 |
45 | 29.5 |
46 | 30 |
47 | 31 |
48 | 32 |
49 | 33 |
50 | 34 |
Women's Size Guide
EU | INSOLE LENGTH |
---|---|
SIZE | CM |
36 | 22 |
36/37 | 22.5 |
37 | 23 |
37/38 | 23.5 |
38 | 24 |
39 | 24.5 |
39/40 | 25 |
40 | 25.5 |
41 | 26 |
41/42 | 26.5 |
42 | 27 |
42/43 | 27.5 |
43 | 28 |
44 | 28.5 |
44/45 | 29 |
Unisex Size Guide
EU | INSOLE LENGTH |
---|---|
SIZE | CM |
36 | 22 |
37 | 23 |
38 | 24 |
39/40 | 25 |
41 | 26 |
42 | 27 |
43 | 28 |
44/45 | 29 |
46 | 30 |
47 | 31 |
48 | 32 |
49 | 33 |
50 | 34 |
Adult Socks Size Chart
EU SIZE | SOCK SIZE |
---|---|
36 | S |
37 | S |
38 | M |
39/40 | M |
41 | M |
42 | L |
43 | L |
44/45 | L |
46 | L |
47 | XL |
48 | XL |
49 | XL |
50 | XL |
Kids' Size Guide
AGE | EU | INSOLE LENGTH |
---|---|---|
(YEARS) | SIZE | CM |
1-3 |
24 | 14.6 |
25 | 15.4 | |
26 | 15.9 | |
4-6 |
27 | 16.6 |
28 | 17.1 | |
29 | 17.8 | |
30 | 18.3 | |
31 | 19.2 | |
7-10 |
32 | 19.7 |
33 | 20.4 | |
34 | 21.3 | |
35 | 21.9 | |
36 | 22.6 | |
37 | 23.5 |
Babies' Size Guide
EU | INSOLE LENGTH |
---|---|
SIZE | CM |
16 | 8.9 |
17 | 9.5 |
18 | 10.5 |
19 | 11.4 |
Kids' Sock Size Guide
AGE | EU |
---|---|
(YEARS) | SIZE |
7-10 | |
L | |
L | |
L |
NEOS Overshoe Size Guide
We recommend going up a size when wearing safety footwear.
For the most accurate sizing, the shoe/boot sole should be measured.
UK | INSIDE INSOLE LENGTH X WIDTH* |
---|---|
SIZE | CM |
X-Small | 26.2 x 10.2 |
Small | 27.9 x 10.9 |
Medium | 29.9 x 11.2 |
Large | 31.5 x 11.4 |
X-Large | 32.5 x 11.7 |
XX-Large |
34.3 x 12.2 |
* This is the Length x Width measurements of the inside of the NEOS Overshoe

NEOS OVERSHOE
INTERNAL DIMENSIONS
NEOS Size | DIMENSIONS | EU SIZE
XS | 26.2(L) x 10.2(W) cm | 35-37
S | 27.9(L) x 10.9(W) cm | 38-40
M | 30(L) x 11.2(W) cm | 41-42
L | 31.5(L) x 11.4(W) cm | 43-45
XL | 32.5(L) x 11.7(W) cm | 46-48
XXL | 34.3(L) x 12.2(W) cm | 49-50
FAQs
HOW ARE OUR WELLIES SIZED?
Everyone’s feet are individual, and we know correctly fitting boots are important. Our wellies come in whole sizes but will stretch to fit half sizes. There is a 15mm toe allowance built into the sizing.
For those who are a half size, order the next size up. Some of our leather products are offered in half sizes.
Women’s styles are specifically built on a women’s last, which has a slightly slimmer foot shape to men’s styles. Our unisex styles are slightly roomier than our women’s styles.
Our size charts above will help you find the perfect fit.
THE HEELS ON MY BOOTS SLIPPING. WHAT CAN I DO?
While we have invested heavily in our shape and sizing, our boots often do not have a lacing system to customise the fit. If your boots slip at the heel, placing heel grips inside will help secure your foot and minimise internal wear.
I HAVE WIDER CALVES, WHICH WELLY WILL SUIT ME?
Neoprene has several features that lend it to making boots – waterproof, self-insulating, breathable, shock-absorbing, flexible, and exceptionally comfortable. However, its stretch-ability also means we can accommodate a range of calf shapes and sizes than regular boots. We also have a collection of mid-height wellington boots that offer all the style and practical benefits of our wider calf wellies, but with a lower cut that many find more comfortable.
UK & EU SIZE CONVERSION
See below Size Conversion between UK and EU sizing.
UK SIZE | EU SIZE |
---|---|
3 | 36 |
4 | 37 |
5 | 38 |
6 | 39/40 |
7 | 41 |
8 | 42 |
9 | 43 |
10 | 44/45 |
11 | 46 |
12 | 47 |
13 | 48 |
14 | 49 |
15 | 50 |